B16018, Submits Response to NRC Bulletin 96-001, Control Rod Insertion Problems
| ML20132C887 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 12/17/1996 |
| From: | Feigenbaum T CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| B16018, IEB-96-001, IEB-96-1, NUDOCS 9612190054 | |
| Download: ML20132C887 (2) | |
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p CONNECTICUT YANKEE ATOMIC POWER COMPANY l
HADDAM NECK PLANT 362 iNJUN HOLLOW ROAD e EAST HAMPTON, CT 06424-3099 December 17,1996 Docket No. 50-213 B16018 l
4 Re:
NRC Bulletin 96-01 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 Haddam Neck Plant Closure of Commitments For Bulletin 96-01 The purpose of this letter is for Connecticut Yankee Atomic Power Company (CYAPCO) to complete its response for the Haddam Neck Plant (HNP) to Nuclear Regulatory Commission (NRC)Bulletin 96-01, " Control Rod Insertion Problems," dated March 8,1996.W CYAPCO responded to NRC Bulletin 96-01 in a letter dated April 8, 1996W and provided the required information with commitments to complete the requested actions.
in a letter dated October 4,1996,W following an unscheduled shutdown and early entry into the refueling outage, the HNP identified three commitments pertaining to end-of-1O i
cycle control rod testing which could not be performed due to plant conditions. These commitments were B15629-3, B15629-5 and B15629-6 and were considered closed with the transmittal letter. The October 4,1996 letter restated CYAPCO's plans to perform control rod drag measurements and submit the associated report, since the h HNP was scheduled to restart following the refueling outage.
(1)
U.S. Nuclear Regulatory Commission to Addressees, "NRC Bulletin 96-01:
Control Rod Insertion Prob!sms", dated March 8,1996.
(2)
F. R. Dacimo to U.S. Nuclear Regulatory Commission, " Response to Bulletin 96-01", dated April 8,1996.
(3)
T. C. Feigenbaum to U.S. Nuclear Regulatory Commission, " Modification of Commitments, Response to Bulletin 96-01," dated October 4,1996.
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> U S. Nucle:r Regul: tory Commiehn B16018/P:gs 2 On December 5,1996, CYAPCO submitted a letterW which certified that it has determined to permanently cease power operations at the HNP and that the fuel has been permanently removed from the reactor. As a result of this certification and the unique core design for the HNP, the remaining commitments to meet the recommended actions of NRC Bulletin 96-01 will not be completed.
The unique core design considerations include the fact that only one fuel assembly in Cycle 19 was a Westinghouse V5H fuel assembly that contained a control rod. The final burnup of this fuel assembly was ~16,000 MWD /MTU, which is clearly below the burnup threshold that was observed for partial control rod insertion. All other control rods were located in a fuel assembly design that included stainless steel guide tubes and are therefore not susceptible to the partial insertion problem.
If you should have any questions on the information contained herein, please contact 1
l Mr. G. P. van Noordennen at (860) 267-3938.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY fW
'/
W
~
T. C. Feigenbauf ~
Executive Vice President and Chief Nuclear Officer l
cc:
H. J. Miller, Region l Administrator S. Dembek, NRC Project Manager, Haddam Neck Plant W. J. Raymond, Senior Resident inspector, Haddam Neck Plant 1
Subscribed and sworn to before me th' 17Nay of December,1996 LQ kiu'W Date Commission Expifes: /6t/W/fu 4
(4)
T. C. Feigenbaum to U.S. Nuclear Regulatory Commission, " Certification of Permanent Cessation of Power Operation and That Fuel Has Been Permanently Removed From the Reactor," dated December 5,1996.